dc.contributor.author |
GOMEZ, R |
|
dc.contributor.author |
ESCUDERO, R |
|
dc.contributor.author |
Jiménez, M |
|
dc.contributor.author |
Aburto, S |
|
dc.contributor.author |
Marquina, V |
|
dc.contributor.author |
Marquina-Fábrega, María Luisa |
|
dc.date.accessioned |
2011-01-22T10:28:36Z |
|
dc.date.available |
2011-01-22T10:28:36Z |
|
dc.date.issued |
1991 |
|
dc.identifier.issn |
0304-3843 |
|
dc.identifier.uri |
http://hdl.handle.net/11154/3108 |
|
dc.description.abstract |
We study the similitudes and differences between YBa2Cu3-xFexO-delta and PrBa2Cu3-xFexO-delta systems, using Mossbauer spectroscopy. Both systems, with z = 0.04, were studied at several temperatures. The spectra of YBa2Cu3-xFeO-delta showed four asymmetric quadrupole doublets with apparently different line widths, which were fitted with four symmetric superimposed quadrupole doublets with the same line width, but assuming a small (approximately 4-6 kOe) residual magnetic field in the Fe sites, which are mainly the Cu(1) sites of the 1-2-3 structure. On the other hand, the PrBa2Cu3-xFeO-delta spectra showed only three asymmetric quadrupole doublets which can be fitted with three superimposed symmetric doublets and a residual magnetic field. In this case, the Fe atoms also occupy the Cu(l) sites of the 1-2-3 structure. The temperature variations of the Mossbauer spectra and their parameters seem to indicate that, in the Pr-system, a structural change takes place between 12 K and 40 K. |
en_US |
dc.language.iso |
en |
en_US |
dc.title |
SYSTEMATIC MOSSBAUER STUDY OF YBA2CU3-XFEXO-DELTA AND PRBA2CU3-XFEXO DELTA AS A FUNCTION OF TEMPERATURE |
en_US |
dc.type |
Article |
en_US |
dc.identifier.idprometeo |
3289 |
|
dc.source.novolpages |
66(40634):423-428 |
|
dc.subject.wos |
Physics, Atomic, Molecular & Chemical |
|
dc.subject.wos |
Physics, Condensed Matter |
|
dc.subject.wos |
Physics, Nuclear |
|
dc.description.index |
WoS: SCI, SSCI o AHCI |
|
dc.relation.journal |
Hyperfine Interactions |
|